dhcp new lease notification

[Hari Sekhon]

Hari Sekhon wrote:
> Tobias Exner wrote:
>> I would like to know when my dhcp-server leases a new ip-adress.
>>
>> The check_dhcp plugin seems to be not the right tool for that.
>> Is there a easy way to do that with nagios
> Nagios isn't the best/right/ideal tool for this really, you would want 
> log based alerting which is entirely different and more real time as 
> well.
>
> You can try this dhcp leases plugin that I wrote which will display 
> all current leases and macs in the nagios interface if you want:
>
> http://www.monitoringexchange.org/cgi-bin/page.cgi?g=Detailed%2F1450.html;d=1 
>
>
> You could make Nagios do what you asked via a nagios check of the 
> logfile for a string indicating a lease grant or something similar but 
> I don't consider this to be a very good solution.

Technically you could kind of use my plugin mentioned about to do what 
you want by simply specifying a whitelist host (doesn't have to exist) 
so that Nagios raises critical on any host that gets a lease. You 
wouldn't be notified of new leases being handed out for the remainder of 
the notification interval though. I consider this a bit of a hack to be 
honest.

Back to my first recommendation, real time log based alerting, that's 
what I do for stuff like this and it is _good_.

-h

-- 
Hari Sekhon
http://www.linkedin.com/in/harisekhon


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